1212211201120 has 48 divisors (see below), whose sum is σ = 2890122847920. Its totient is φ = 480435992064.

The previous prime is 1212211201111. The next prime is 1212211201151. The reversal of 1212211201120 is 211021122121.

It is a super-2 number, since 2×1212211201120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1212211201094 and 1212211201103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34736322 + ... + 34771201.

It is an arithmetic number, because the mean of its divisors is an integer number (60210892665).

Almost surely, 2^{1212211201120} is an apocalyptic number.

1212211201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212211201120 is an abundant number, since it is smaller than the sum of its proper divisors (1677911646800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212211201120 is a wasteful number, since it uses less digits than its factorization.

1212211201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69507647 (or 69507639 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212211201120 its reverse (211021122121), we get a palindrome (1423232323241).

The spelling of 1212211201120 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred one thousand, one hundred twenty".